Device for coupling two bicycles.



Nd. 707,122. Pat en'tad Aug. l9, I902. J. KYNASTON.

DEVICE FOR COUPLING TWU BIGYGLES.

(Application filed Mar. 20, 1902. (No Model) 3 Sheets-Sheet Mum rm 3 I W/T/VESSES f2. T/m

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. Patented Rug. l9, I902. KYNASTON. Y DEVICE FOR COUPLING TWO BIGYGLES 3vSheatsSheet 3.

(Application filed Mar. 20, IQQQJ (No Model.)

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U ITED STATES PATE T OFFICE.

JOHNKYNASTON, on LIVERPOOL, ENGLAND.

DEVICE FOR COUPLING TWO BICYCL ES.

SPECIFICATION formingpart of LettersPatent NO. 707,122, dated August 19, 1902.

Application filed March 20,

A ject of the King of Great Britain and Ireland,

. vention.

' yoke-bracket before referred to.

residingat 70. Hope street, Liverpool, England, have iuventedga' new and. useful Improvement in Devices for Coupling Two Bicycles, of which the following is a specification.

The present invention relates to means for coupling two bicycles side. by side, whereby' they form, in effect, a four-wheeled carriage. Such means comprise certain struts and stays reaching from one bicycle to the other and certain adjustable or hinged fixings by which these struts and stays are attached to the bicycles. 1 g

. In the annexed drawings, Figure 1 is a plan of two bicycles coupled according to this in- Fig. 2 illustrates-"in plan a parallel movement attached to the'front-fork crowns. Fig. 3 illustrates in plan a yoke hinged to brackets clipped upon the handle-bar stems. Fig. 4 is aside elevation of the head of one bicycle, showing the parallel movement and Fig. 5 is a plan View of the rear wheels and forks of the bicycles,showing the strut connecting the rear axles and the diagonal stays which tie the rear axle of one bicycle to the saddle-pillar of the other bicycle. Fig. 6 is a detail of part of Fig. 5. 1

The parallel steering movement A comprises two plates 1 1, which are. attached to and underneath the crowns 2 20f the front forks 3 3 by a centralstud 4. These plates.

1 1 project backwardly and forwardly, and" in these projeeting parts are swiveledthe ends of the parallel guide-rods 5 5; By means of this parallel movement the steering movements of the two forks will be identical. The plates 1 1 may remain as fixtures,the guide rods being readily removed. 1

The yoke B performs two fu nctions. namely, it retains the two steering-heads in a parallel position Vertically and it serves as a secondary or supplementary steeringgear; To. the'stem 'of each handle-bar is clippeda bracket" 6,'and on each of these brackets 6 6 is formed a socket for a swivelpin. This socket is formed on the end of a 1902. Seria1No.99,1'71i lNomodel.)

byimeans of the strut, O and'the diagonal stay-rods D. Screwed upon the projecting end of the rear axle 10 is the bicycle-step 11. (Shown. more clearly'lin the. detail-Fig. 6.) This step is hollow and 'receivesthe, end of the strut O. The strut ends may be screwed with right or left hand threads into these steps 11; but I'findit sufficient for. the purpose to merely'slide'themthereinL Abracket 12, secured onthe rear axle, possesses a sleeve 13, whichslips over the step 11 and so stiffens the latter against any twisting strain. Also secured on the'rear axle isa washer 14, pos-- sessing an eye 15, which eye receives the hooked end of a stay D. These stays D reach from the rear axles to the seat-pillars 16. To.

these pillars are attached the clips 17, and in these clips are swiveled theeyebolts 18. The upper ends of the stays Dp ssess eyes 19 to receive the bolts 18, the stays being tightened by the nuts 20.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent,'is

In combination the plates 1' attached to the front-fork crowns, theguide rods 5 forming with said plates a parallel steeringmovement, the yoke B hinged to brackets 6 clipped on foot-steps on the rear axles, and the stays D hooked in eye-washers on the rear axles and attached =by-the tightening bolts and nuts 18, -20,"to the clips 17 attached to the seat-pillars .16, forming a coupling for two bicycles, as I described. 1

' J'NO. KYNASTON.

Witnesses:

JAMES A. CoUBRoUcH, JOHN H. SMITH.

the handle-bar stems, the strut O socketed in 

